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Finding the Fourth Proportional to 6,768.55, 9,340.90 and 3,784.39

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Solution

The fourth proportional to 6,768.55, 9,340.90 and 3,784.39 is: 5,222.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,768.55 : 9,340.90 = 3,784.39 : x
  2. Step 2: Convert to fraction form
    6,768.55/9,340.90 = 3,784.39/x
  3. Step 3: Cross multiply
    6,768.55x = 9,340.90 × 3,784.39
  4. Step 4: Simplify right side
    6,768.55x = 35,349,575.74
  5. Step 5: Solve for x
    x = 35,349,575.74/6,768.55
  6. Step 6: Final answer
    x = 5,222.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.